91066801 has 16 divisors (see below), whose sum is σ = 106686720. Its totient is φ = 76124160.

The previous prime is 91066799. The next prime is 91066817. The reversal of 91066801 is 10866019.

It is a happy number.

It is not a de Polignac number, because 91066801 - 2¹ = 91066799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (91066891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47265 + ... + 49153.

It is an arithmetic number, because the mean of its divisors is an integer number (6667920).

Almost surely, 2^91066801 is an apocalyptic number.

It is an amenable number.

91066801 is a deficient number, since it is larger than the sum of its proper divisors (15619919).

91066801 is a wasteful number, since it uses less digits than its factorization.

91066801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 91066801 is about 9542.8926956138. The cubic root of 91066801 is about 449.9041787746.

The spelling of 91066801 in words is "ninety-one million, sixty-six thousand, eight hundred one".